From: David Robillard <d@drobilla.net>
Date: Tue, 9 Jun 2009 21:17:12 +0000 (+0000)
Subject: Fix crash when loading broken sessions with invalid route IDs.
X-Git-Tag: 3.0-alpha5~3393
X-Git-Url: https://main.carlh.net/gitweb/?a=commitdiff_plain;h=318fb3a0694c6a3533cd6068069b3417c74c39e0;p=ardour.git

Fix crash when loading broken sessions with invalid route IDs.


git-svn-id: svn://localhost/ardour2/branches/3.0@5139 d708f5d6-7413-0410-9779-e7cbd77b26cf
---

diff --git a/libs/ardour/session_command.cc b/libs/ardour/session_command.cc
index cf9cd6f7c9..828daf37bb 100644
--- a/libs/ardour/session_command.cc
+++ b/libs/ardour/session_command.cc
@@ -103,7 +103,9 @@ Session::memento_command_factory(XMLNode *n)
 		    return new MementoCommand<Playlist>(*(pl.get()), before, after);
 	    }
     } else if (obj_T == typeid (Route).name() || obj_T == typeid (AudioTrack).name() || obj_T == typeid(MidiTrack).name()) { 
-	    return new MementoCommand<Route>(*route_by_id(id), before, after);
+		if (boost::shared_ptr<Route> r = route_by_id(id)) {
+			return new MementoCommand<Route>(*r, before, after);
+		}
     } else if (obj_T == typeid (Evoral::Curve).name() || obj_T == typeid (AutomationList).name()) {
 		std::map<PBD::ID, AutomationList*>::iterator i = automation_lists.find(id);
 		if (i != automation_lists.end()) {